Hello Behera, Mamatamayi,
From the error message, can you upgrade az.synapse version to 3.0.5?
run these cmds from your home directory (/home/youruser)
`Install-Module -Name Az.Synapse -RequiredVersion 3.0.5
Get-Module -ListAvailable
Start-AzSynapseTrigger -WorkspaceName <wspcnamegoeshere> -Name <triggernamegoeshere>
Get-Module -Name Az.Synapse`